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DOI	10.1016/j.palaeo.2020.109639
	Macaronichnus and contourite depositional settings: Bottom currents and nutrients as coupling factors
	Miguez-Salas O.; Rodríguez-Tovar F.J.; De Weger W.
发表日期	2020
ISSN	0031-0182
卷号	545
英文摘要	The trace fossil Macaronichnus segregatis degiberti (7–15 mm in diameter) is recorded for the first time in deep-marine contourites which were deposited in a Late Miocene outer-shelf to upper slope of the Rifian Corridor (Morocco). Macaronichnus is typical of shallow-marine, mainly foreshore environments. It is produced by deposit feeding opheliid polychaetes in high to intermediate latitudes. This record supports the significance of bottom current processes on environmental conditions as a major limiting factor affecting the macrobenthic trace maker community. Mediterranean overflow water during the Late Miocene enabled a high nutrient supply to the seafloor, favouring colonization by Macaronichnus producers. Thus, M. s. degiberti should be used as an indicator for nutrient availability instead of mainly a palaeodepth indicator. This finding provides significant information for oceanographic and environmental reconstructions related to contouritic processes, as well as to contourite characterization. © 2020 Elsevier B.V.
英文关键词	Contourites; Deep-sea; Food supply; Morocco; Trace fossils
语种	英语
scopus关键词	bottom current; contourite; deep-sea organism; deposit feeding; depositional sequence; environmental conditions; factor analysis; food supply; marine environment; Miocene; nutrient dynamics; trace fossil; Morocco; Opheliidae; Polychaeta
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150569
作者单位	Departamento de Estratigrafía y Paleontología, Universidad de Granada, Avd. Fuentenueva s/n, Granada, 18002, Spain; Department of Earth Sciences, Royal Holloway University of London, Egham, TW20 0EX, United Kingdom
推荐引用方式 GB/T 7714	Miguez-Salas O.,Rodríguez-Tovar F.J.,De Weger W.. Macaronichnus and contourite depositional settings: Bottom currents and nutrients as coupling factors[J],2020,545.
APA	Miguez-Salas O.,Rodríguez-Tovar F.J.,&De Weger W..(2020).Macaronichnus and contourite depositional settings: Bottom currents and nutrients as coupling factors.Palaeogeography, Palaeoclimatology, Palaeoecology,545.
MLA	Miguez-Salas O.,et al."Macaronichnus and contourite depositional settings: Bottom currents and nutrients as coupling factors".Palaeogeography, Palaeoclimatology, Palaeoecology 545(2020).